Tankless water heater enclosure



FIG. 1 is a front bottom perspective view of our new design for a tankless water heater enclosure;

FIG. 2 is a back top perspective view thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a back elevation view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines in the figures show portions of the tankless water heater enclosure that form no part of the claimed design. 

CLAIM The ornamental design for a tankless water heater enclosure, as shown and described. 